please help my babies!

heres my stats if you could help me id be very grateful the bottom leaves of most of my plants began turning yellow ive posted some pics, sorry about the quality, i think the problem is probably due to i used soil bought from my garden centre and just added vermiculite and perlite, could something be locking out nutrients from the feed? i have flushed them and then repotted into larger pots, they were slightly root bound but not enough to cause these problems in my opinion . since repotting problem is slowly returning, there are two cases of the yellowing one is pretty much uniform on all of them were the leaves are fading lighter green towards the edge while the veigns remain darker, and on these the lower leaves are pretty much yellow. The other which is a brighter whiter yellow is all over 2 plants from t
op to bottom?

E-indoor or outdoor = INDOOR
E-soil, soilless, coco, aero, or hydroponic= SOIL
CSL-Soil type/brand = LOCAL GARDEN STORE SOIL WITH ADDED VERMICULITE AND PERLITE
SCL-Anything you have added to the soil = NOTHING ELSE EXCEPT BIOBIZZ BIO GROW VEG FEED YET
SCLR-Soil or slab runoff pH = 6.7
E-Water source = TAP
E-Source water pH = PRETTY MUCH NEUTRAL
E-Age of plant = 4 WEEKS
E-Type of fertilizer = BIO BIZZ BIO GROW VEG
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added) = 1.5ML PER LITRE
E-Lighting source and distance from plant = 600 W / 20 INCHES
E-Air temperature (both day and night if you are running a dark period) 30-34
E-Air % Relative humidity = DUNNO BUT EXTRA CUPS OF WATER PLACED IN AREA JUST IN CASE
E-Lighting schedule = 24 HOUR
E-Type of ventilation your room has 6 INCH FAN WITH ODORSOK


please help me :stoned:

I've never used BioBizz, so I don't know their dilutions...but they look like either they are a tad starved, or they were starved.
If it started after the transplant, I'd make a little adjustment. Either I'd increase the nutrient dosage a little tiny bit, or soak the media a bit more when giving nutes. If it started before the transplant, I'd give it a few days to see if there is any improvement in her growth.

Often, old leaves are old news, and there's nothing that can be done to improve the appearance of a necrotic leaf. Work on keeping the new growth happy. :thumbsup:

You mention the runoff at 6.7 but didn't mention the tap ph. Also...does the tapwater smell like chlorine, and do you use a micronute additive or Superthrive?

20 inches is a bit far for a 600w bulb, isn't it? Can you get it closer without burning the ladies?

Perlite and vermiculite are basically benign, (harmless) unless it dries-out the soil too quickly.